Disp fx of prox phalanx of finger, subs for fx w nonunion

This code signifies a fracture of the upper part of a finger bone (excluding the thumb) that has shifted out of alignment. At this stage, the fracture has failed to heal properly, indicating a nonunion, and the patient is presenting for follow-up care related to this ongoing issue.

Apply this code when a patient with a previously diagnosed displaced proximal phalanx fracture of any finger (other than the thumb) is seen for treatment or evaluation of a confirmed nonunion. This would be used for subsequent visits after the initial treatment of the fracture, specifically addressing the complication of nonunion.

• Ensure documentation clearly states "nonunion" and specifies a "displaced" fracture of the proximal phalanx of a finger other than the thumb.
• Verify this is a subsequent encounter for the fracture, not the initial treatment.
• Do not use for initial fracture care or for malunion, which is a different complication.